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Capital Ratios (Tables) | 12 Months Ended
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Dec. 31, 2017
Capital [Abstract] |
Schedule of compliance with regulatory capital requirements under banking regulations | The following table indicates the capital ratios for PNB and Park at December 31, 2017 and 2016.
| As of December 31, 2017
| Leverage |  | Tier 1 Risk-Based |  | Common Equity Tier 1 |  | Total Risk-Based
The Park National Bank | 7.36 | % |  | 10.35 | % |  | 10.35 | % |  | 11.60 | %
Park National Corporation | 9.44 | % |  | 13.22 | % |  | 12.94 | % |  | 14.14 | %
Adequately capitalized ratio | 4.00 | % |  | 6.00 | % |  | 4.50 | % |  | 8.00 | %
Adequately capitalized ratio plus capital conservation buffer | 4.00 | % |  | 8.50 | % |  | 7.00 | % |  | 10.50 | %
Well-capitalized ratio - PNB | 5.00 | % |  | 8.00 | % |  | 6.50 | % |  | 10.00 | %
Well-capitalized ratio - Park | N/A |  |  | 6.00 | % |  | N/A |  |  | 10.00 | %
| As of December 31, 2016
| Leverage |  | Tier 1 Risk-Based |  | Common Equity Tier 1 |  | Total Risk-Based
The Park National Bank | 7.34 | % |  | 9.87 | % |  | 9.87 | % |  | 11.24 | %
Park National Corporation | 9.56 | % |  | 12.83 | % |  | 12.55 | % |  | 14.32 | %
Adequately capitalized ratio | 4.00 | % |  | 6.00 | % |  | 4.50 | % |  | 8.00 | %
Adequately capitalized ratio plus capital conservation buffer | 4.00 | % |  | 8.50 | % |  | 7.00 | % |  | 10.50 | %
Well-capitalized ratio - PNB | 5.00 | % |  | 8.00 | % |  | 6.50 | % |  | 10.00 | %
Well-capitalized ratio - Park | N/A |  |  | 6.00 | % |  | N/A |  |  | 10.00 | %
Schedule of various measures of capital ratio | The following table reflects various measures of capital for Park and PNB:
|  |  |  |  |  | To Be Adequately Capitalized |  | To Be Well-Capitalized
(In thousands) |  | Actual Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio
At December 31, 2017 |  |  |  |  |  |  |  |  |  |  |  |
Total Risk-Based Capital (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |
PNB |  | $ | 628,440 |  |  | 11.60 | % |  | $ | 433,406 |  |  | 8.00 | % |  | $ | 541,757 |  |  | 10.00 | %
Park |  | 775,867 |  |  | 14.14 | % |  | 438,981 |  |  | 8.00 | % |  | 548,726 |  |  | 10.00 | %
Tier 1 Risk-Based Capital (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |
PNB |  | $ | 560,530 |  |  | 10.35 | % |  | $ | 325,054 |  |  | 6.00 | % |  | $ | 433,406 |  |  | 8.00 | %
Park |  | 725,221 |  |  | 13.22 | % |  | 329,235 |  |  | 6.00 | % |  | 329,235 |  |  | 6.00 | %
Leverage Ratio (to average total assets) |  |  |  |  |  |  |  |  |  |  |  |
PNB |  | $ | 560,530 |  |  | 7.36 | % |  | $ | 304,722 |  |  | 4.00 | % |  | $ | 380,903 |  |  | 5.00 | %
Park |  | 725,221 |  |  | 9.44 | % |  | 307,441 |  |  | 4.00 | % |  | N/A |  |  | N/A |
Common Equity Tier 1 (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |
PNB |  | $ | 560,530 |  |  | 10.35 | % |  | $ | 243,791 |  |  | 4.50 | % |  | $ | 352,142 |  |  | 6.50 | %
Park |  | 710,221 |  |  | 12.94 | % |  | 246,927 |  |  | 4.50 | % |  | N/A |  |  | N/A |
At December 31, 2016 |  |  |  |  |  |  |  |  |  |  |  |
Total Risk-Based Capital (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |
PNB |  | $ | 607,269 |  |  | 11.24 | % |  | $ | 432,153 |  |  | 8.00 | % |  | $ | 540,192 |  |  | 10.00 | %
Park |  | 784,406 |  |  | 14.32 | % |  | 438,231 |  |  | 8.00 | % |  | 547,789 |  |  | 10.00 | %
Tier 1 Risk-Based Capital (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |
PNB |  | $ | 533,215 |  |  | 9.87 | % |  | $ | 324,115 |  |  | 6.00 | % |  | $ | 432,153 |  |  | 8.00 | %
Park |  | 702,651 |  |  | 12.83 | % |  | 328,673 |  |  | 6.00 | % |  | 328,673 |  |  | 6.00 | %
Leverage Ratio (to average total assets) |  |  |  |  |  |  |  |  |  |  |  |
PNB |  | $ | 533,215 |  |  | 7.34 | % |  | $ | 290,671 |  |  | 4.00 | % |  | $ | 363,339 |  |  | 5.00 | %
Park |  | 702,651 |  |  | 9.56 | % |  | 293,916 |  |  | 4.00 | % |  | N/A |  |  | N/A |
Common Equity Tier 1 (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |
PNB |  | 533,215 |  |  | 9.87 | % |  | 243,086 |  |  | 4.50 | % |  | 351,125 |  |  | 6.50 | %
Park |  | 687,651 |  |  | 12.55 | % |  | 246,505 |  |  | 4.50 | % |  | N/A |  |  | N/A |

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- Definition Tabular disclosure of the capital amounts and ratios as of the balance sheet date, indicating whether the entity or entities are in compliance with regulatory capital requirements, by entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=84167132&loc=SL5958570-112826 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84167132&loc=SL5958568-112826 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=84167132&loc=d3e65071-112826 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1G -URI http://asc.fasb.org/extlink&oid=84167132&loc=SL5958577-112826 + Details
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